Cat Caterpillar Hand Tools USA. 21 +1 Piece 3/4 Drive Heavy Duty Socket Set. MPN = SAE Sizes. 8H-8545 = Ratchet Head. 8H-8546 = Breaker Bar Head. 8H-8561 = 1/2″ to 3/4″ Adapter. This set is in very good Pre-Owned / Used Condition. Please see the attached photos of the actual item you are purchasing. Please look at the pictures closely and judge the condition and content of this lot for yourself. We consider our photos to be a large portion of our description. What is pictured is what you get so if you don’t see it in the photos it is not included. We will try to answer them promptly (usually within an hour).